Combos Utilizing Sickening-Dreams

3 color combo (bwg). sac land to gain 3 life. instead of gaining life, use lich to draw 3 cards. once you have enough cards in had to kill opponent cast sickening dreams

when nefarious lich and confessor are in play, use sickening dreams. you can do damage to everythig equal to cards in your library. after the spell you just remove the discarded cards from the game.

death by discard...

use arcanis's draw ability to get lots of cards in your hand then use sickening dreams to discard them all and blast your opponent (and you, and all creatures in play).